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Handicap FAQ

Handicaps: The USGA Handicap System allows the 4.5 million golfers with handicaps to play all sorts of courses and still compete head-to-head. It is also a good way to track your progress in a uniform manner. Such a system will necessarily be complex to cover all contingencies, and the USGA puts a tremendous amount of work into it. But all Lambda Links members have to do is enter their scores.
Since we meet the USGA guidelines for a golf club, we are authorized to give official USGA Handicaps. (A club doesn’t need to have a golf course to give handicaps.) You need at least 5 scores entered to have a handicap (officially called Handicap Index or HI), but your best calculation will be when you have at least 20 scores entered. Each player is responsible for following the USGA rules and guidelines. This Web page is a brief summary of the USGA Handicap System. If interested you can look up the manual at www.usga.org.
To post a score send the following information to the Handicap Coordinator:
  Your name
  Date of play
  Your score
  Course name (and location if out of the DC Metro area)
  Tees played
  Tee Rating/Slope

Handicap Glossary

Adjusted Gross Score:
The score a player enters for his or her handicap. Enter gross score plus these adjustments if necessary:
If a hole is conceded or not finished enter the score you would most likely have made.
If a hole is not played or not played according to the Rules, enter a score of par plus strokes allowed under course handicap for that hole.
Enter no hole score greater than that allowed under ESC for your course handicap
If you play by the rules and use the ESC for your maximum score per hole, then your score needs no adjustment. Additionally, “winter rules”/“preferred lies” do not nullify your hole score, but mulligans do—in that case use adjustment 2 above. “Gimmies” come under adjustment 1.
Course Handicap (CH)
Is the number of strokes you are entitled to for a particular course, based on your handicap index (HI) and the course slope. Usually within a couple of your HI. Subtracting your CH from you score will give you your net score (see formula below).
Course Rating
USGA measurement of a course: a calculation of the expected score of a scratch player when playing well.
Equitable Stroke Control (ESC)
The maximum score on a hole allowed for the purpose of calculating your HI. There is always a maximum. (See chart below.)
Handicap Differential (HD)
Each score entered is converted to a HD, and then the HDs are converted to your Handicap Index. (See formula below.)
Handicap Index (HI)
What is meant by “your handicap.” This is independent of where you are playing. (See formula below.)
Slope
USGA measurement of a course: how much harder the course is for bogey player than scratch player; 113 is the slope of average difficulty. A higher slope indicates a more difficult course and therefore more strokes are given to higher handicappers.
Frequently Asked Questions (FAQs)
1. How come I so rarely play to my handicap?
Your HI is the USGA’s mathematical calculation of your current scoring potential, NOT an average of your scores. When your game is “on” your score should be close to your course handicap. Your HI is the average of your best HDs, reduced by 4% to encourage improvement.
2. I got a HI after 5 scores, but even though I am not playing worse, how come my HI keeps creeping up as I enter more scores?
While you can have an HI after 5 scores entered, it is skewed towards the low end. As you enter more scores, your HI will tend to rise, until you have 20 scores entered, which will be the best measure of your HI. After that, your HI will be based on your last 20 scores entered. But of course, great scores will push down your HI.
3. I played terrible today; I know my worst scores are “thrown out,” so do I have to post this score?
Yes—you are required to post all your eligible scores. The formula will determine your worst scores, and make the adjustments. Otherwise, your HI will be too low.
4. Which is worse, a 94 at East Potomac, or a 101 at Little Bennett?
As far as your HI is concerned, they are the same! Both scores convert to a 27.0 HD. This is the beauty of the USGA formula, it adjusts for course difficulty.
5. Sometimes I only play 9 holes, do those scores count towards my HI?
Yes, if you play 9 holes next time, without an intervening 18-hole round. Then you add the nine-hole scores together for one score. Otherwise, they don’t count.
6. I am a woman, and I like to play from the White tees—what adjustments are made?
First check if there are a CR and slope for women for the whites. If not, then the CR and slope for the reds will need to be adjusted upward. Find the difference in yards from white to red tees, and look up how much the red tee CR and slope will be adjusted upward in the USGA Handicap Manual, Sec 5-2 (f); it is both online under usga.org , and Lambda Links has a copy
7. The scorecard does not have a CR or Slope, is the score still acceptable?
First ask if the course has been rated; new courses sometimes don’t have the ratings in time to put on the cards. But if a course is not been rated, then the score is not useable for your HI.
8. I have more than 20 scores entered. Usually when I enter a pretty good score my HI either declines or stays the same, but sometimes it jumps up, why is that?
Once 20 scores are entered, every new score entered pushes out the oldest score—sometimes the oldest score was a great round that was weighing your HI down, and pushing it out causes your HI to increase. In general though, the effect of good scores outweighs the effect of poor ones, so your HI does not rise upward often.
9. Why is there a maximum handicap index (HI): 36.4 for men, 40.4 for women?
The HI is in effect a predictor of your score, based on your previous scores. Low handicappers have a tighter distribution of scores, while high handicappers have a wider distribution--that is, their scores tend to be more erratic. The USGA has determined that for HIs higher than these maximums the scoring is too erratic to be predictable. Please note: your course handicap can be higher than these maximums, if the course slope is over 113. Don’t confuse the handicap index with the course handicap.
10. Can I play Winter Rules, and if I do, can I report that score for my handicap?
Lambda Links does that make this decision, rather it is up to the course management. The course you are playing should have established whether preferred lies (winter rules) are acceptable and, if so, if the scores should be posted for your handicap. If the local course hasn’t made a statement about preferred lies then you shouldn’t play them.

The USGA summarized this point on their Web site (in the following, local clubs or committees refers to golf course management, or those clubs that operate a golf course, which Lambda Links does not):
“The use of preferred lies or winter rules is not endorsed nor interpreted under the Rules of Golf. But a local rule denoting the existence of such a practice is included in the Rules of Golf for the benefit of local Committees faced with adverse course conditions. Scores made under preferred lies or winter rules will be posted for handicap purposes unless a club’s Handicap Committee determines that conditions are so poor that such scores should not be posted.” [Emphasis Added]

USGA Formulas
Course Handicap (CH)
At each course you play, you can convert your HI into a CH, which will be the number of strokes you can subtract from your score to get your net or handicap score. Your CH will usually be within a couple of your HI. Sometimes the course will have a chart to convert your HI to a CH, otherwise use the calculation HI x slope / 113, rounded to the nearest integer.
For example: You are a woman who’s HI is 25.2 and are playing at Marlton GC, which has a slope of 120 from the reds. Your CH for Marlton is 25.2 x 120 / 113 = 26.8, which is rounded to 27. If you shoot a 98, your net score is 98 - 27 = 71. This also means your maximum score on any hole is 8 (see ESC below).
Handicap Differential (HD)
Each score that you report for a handicap is converted to a HD, like a “mini handicap” for that round. These HD numbers are used by the Handicap Coordinator to compute your HI. You do not need to make this calculation, just report your scores as requested above and the Handicap Coordinator will perform this step toward calculating your HI. The HD is calculated as HD= (Score - CR) x 113/Slope. The result is rounded to nearest tenth.
Handicap Index (HI)
If at least 20 scores are reported then your HI = (Average of 10 lowest HDs) x 0.96, truncated to the first decimal point. If less than 20 scores are entered then an average is taken based on a USGA defined table (see USGA Handicap Manual section 10-2). Like the HD, the HI performs this calculation.
Equitable Stroke Control (ESC)
The ESC sets a maximum score per hole, and is based on your CH. Here are the limits:
Course Handicap (CH)
Maximum Score per Hole
09
Double bogey
10-19
7
20-29
8
30-39
9
40 or more
10
For example, for the above woman, with a CH of 25, the maximum that she can record on any hole for handicap purposes is an 8.

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